The Ziggurat of Ur is a Neo-Sumerian ziggurat in what was the city of Ur near Nasiriyah, in present-day Dhi Qar Province, Iraq. The structure was built during the Early Bronze Age, but had crumbled to ruins by the 6th century BC of the Neo-Babylonian period when it was restored by King Nabonidus. Its remains were excavated in the 1920s and 1930s by Sir Leonard Woolley. Under Saddam Hussein in the 1980s, they were encased by a partial reconstruction of the facade and the monumental staircase. The ziggurat of Ur is the best-preserved of those known from Iran and Iraq, besides the ziggurat of Dur Untash (Chogha Zanbil). It is one of three well preserved structures of the Neo-Sumerian city of Ur, along with the Royal Mausolea and the Palace of Ur-Nammu
The ziggurat was built by King Ur-Nammu who dedicated the great ziggurat of Ur in honour of Nanna/Sin, in approximately the 21st century BC (short chronology) during the Third Dynasty of Ur. The massive step pyramid measured 210 feet (64m) in length, 150 feet (46m) in width and over 100 feet (30m) in height. The height is speculative, as only the foundations of the Sumerian ziggurat have survived. The ziggurat was a piece in a temple complex that served as an administrative center for the city, and which was a shrine of the moon god Nanna, the patron deity of Ur.The construction of the ziggurat was finished in the 21st century BC by King Shulgi, who, in order to win the allegiance of cities, proclaimed himself a god. During his 48-year reign, the city of Ur grew to be the capital of a state controlling much of Mesopotamia.